Pleosporales » Pleosporales, genus incertae sedis » Isthmosporella

Isthmosporella pulchra

Isthmosporella pulchra Shearer & J.L. Crane, Mycologia 91(1): 142 (1999).

           Index Fungorum number: IF 450566; Facesoffungi number: FoF11815, Fig. 1

Description: see Shearer and Crane (1999).

Material considered: see Shearer and Crane (1999).

Fig. 1 Isthmosporella pulchra (ILLS 53086, holotype, re-drawn from Figs. 4, 6, 7 in Shearer and Crane 1999). a Longitudinal section of ascoma. b Peridium. c Ascus. d Pseudo paraphyses. e, f Ascospores. g Ascospore mounted in Indian ink showing gelatinous sheath. Scale bars: a = 100 μm, b = 5 μm, c = 10 μm, d–g = 2 μm.

Importance and distribution

Isthmosporella comprises only one species known on decorticated wood submerged in fresh water in the United States (New York).



 Barr ME. 1987 – Prodromus to class Loculoascomycetes. Amherst, Massachusetts, University of Massachusetts, USA.

Cannon PF. 1995 – Studies on fungi with isthmoid ascospores: the genus Vialaea, with the description of the new family Vialaeaceae. Mycological Research 99, 367–373.

Shearer CA, Crane JL. 1999 – Freshwater Ascomycetes: Isthmosporella pulchra Gen. and sp. nov. Mycologia 91, 141–144.

Shoemaker RA, Babcock CE. 1985 – Canadian and some extralimital Paraphaeosphaeria species. Canadian Journal of Botany 63, 1284–1291.

Shoemaker RA, Babcock CE. 1989 – Phaeosphaeria. Canadian Journal of Botany 67, 1500–1599.


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